Light Scanning Device Housing Segmentation for Dust Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light scanning devices face challenges in suppressing the intrusion of fine dust particles, which reduces the reflectivity of the polygonal mirror and affects image quality due to the design of the connector insertion hole and the difficulty in achieving a tight seal, leading to potential contamination and image deterioration.
Innovation Solution
The light scanning device incorporates a housing with an interior and exposed section separated by elastic separators, enhancing dust shielding properties by using a substrate with distinct regions for the polygonal mirror and connector, and employing a cover member that seals the interior section while allowing the exposed section to be externally accessible, thereby reducing air turbulence and dust intrusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a connector insertion hole is provided in the elastic member to allow connector insertion from outside, then ease of operation is improved, but the sealing property deteriorates allowing fine dust particles to intrude
Solution Approach 1:
The housing is divided into an interior section (containing the polygonal mirror) and an exposed section (accessible from outside), separated by a partition wall. The connector insertion hole is located only in the exposed section, allowing connector access without compromising the seal of the interior section.
Solution Approach 2:
The connector insertion function is extracted from the interior section and relocated to the exposed section. This allows the interior section to maintain its hermetic seal while the exposed section provides external access for connector insertion and removal.
2Productivity
If the polygonal mirror rotates at high speed to increase productivity, then productivity is improved, but foreign matter adhesion increases due to positive and negative pressure regions
Solution Approach 1:
The interior section containing the polygonal mirror is sealed to create a protected environment isolated from the external atmosphere. This hermetic seal prevents foreign matter such as dust particles and mist from entering the interior section, even when the polygonal mirror rotates at high speeds and generates positive and negative pressure regions that would otherwise attract contaminants.
3Ease of operation
If the connector insertion hole deforms or forms gaps during connector insertion/removal, then ease of operation is improved, but the sealing property deteriorates
Solution Approach 1:
The housing is segmented into interior and exposed sections with the connector insertion hole located only in the exposed section. This segmentation ensures that connector insertion and removal operations occur in the exposed section only, preventing any deformation or gap formation that would compromise the seal of the interior section.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively suppresses the intrusion of fine dust particles, maintaining high reflectivity and image quality by creating a hermetic seal between the interior and exposed sections, even during connector connection processes, and supports increased polygonal mirror rotation speeds without compromising shielding properties.
Implementation Method 1
an elastic member is disposed in the cutout, and a connector extends through the elastic member
Data Source
AI summary
In a light scanning device, a substrate equipped with a polygonal mirror is disposed astride an interior section and an exposed section of a housing. The substrate is provided with a separator that comes into contact with a front face thereof. The separator separates the substrate into a first region disposed in the interior section and a second region disposed in the exposed section. The polygonal mirror is provided in the second region of the substrate.